There is a scene after the credits. There is also a hidden single-frame insert after the copyright notice.
Voice on tape is heard exactly when he's credited in the end credits, which go on the same tape.
In the end credits, music starts on the credit "music composed by" and goes back to white noise on the credit "sound designer and recordist".
In the end credits, on the credit "still photographer" there is a single-frame insert of a still photograph from the film.
In the "special thanks" section of the end credits, said credits is seen only on the 23rd name attributed to it.